<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0px;
        }

        body {
            background-color: aquamarine;
        }

        div {
            width: 300px;
            height: 400px;
            margin: 30px auto;
            border: 1px rgba(0, 0, 0, 0.5) solid;
            border-radius: 10px;
            background-color: rgb(31, 208, 105);
        }

        form {
            font-size: 10px;
            width: 250px;
            height: 200px;
            border: 10px rgba(0, 0, 0, 0.1) solid;
            margin: auto;
            padding-top: 60px;
            background-color: aliceblue;
            border-radius: 10px;

        }

        input {
            width: 200px;
            height: 20px;
            margin-left: 30px;

        }

       
        button:hover {
            border: none;
           
        }

        input.border {
            border: 1px red solid;

        }

        small {
            margin-left: 30px;
            color: red;
        }

        button {
            width: 50px;
            height: 30px;
            border-radius: 30px;
            background-color: rgba(100, 100, 100, 0.3);
            border: 1px rgba(255,255,255, 1) solid;
            margin-left: 42px;
        }
        p{
            font-size:20px; 
           
            margin:20px;
            text-align: center;
        }
    </style>
</head>

<body>
    <div>
        <p >登录</p>
        <form action="">
            <input type="text" placeholder="用户名"><br>
            <small class="small-id"></small><br><br>
            <input type="password" placeholder="密码"><br>
            <small class="small-password"></small><br><br>
            <!-- <input type="submit" value="提交" style="width:50px; margin-left:80px ;height:30px;"> -->
            <button>提交</button>
           <button>注册</button>
        </form>
    </div>
</body>
<script src="javascripts/Sign in.js"></script>

</html>